I think he would have been a bad Boss for a number of reasons,first and foremost,his psycho personality.
Then you have his lack of respect for anyone else. Remember when Vito's brother was in the coma and Ralphie said "he wasn't that smart to begin with? As far as beating the stripper to death,I don't think that would cause him a problem. one,she was not related to or married to any made guys. Two, her murder would have been just like the waiter that Chris and Paulie killed. bad decision,yea,but no made guy (Soprano member or any other Family member) would have any business questioning it.

IMHO,he was just too egocentric to head the Sopranos. I could almost see him playing "got your nose" with Carmine Luppertazzi,or giving him "noogies" at a major sitdown,and thinking he was the life of the party.